package com.jimmy.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.jimmy.reggie.common.BaseContext;
import com.jimmy.reggie.common.CustomException;
import com.jimmy.reggie.entity.*;
import com.jimmy.reggie.mapper.OrdersMapper;
import com.jimmy.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;
    @Override
    /**
     * A. 获得当前用户id, 查询当前用户的购物车数据
     *B. 根据当前登录用户id, 查询用户数据
     *C. 根据地址ID, 查询地址数据
     *D. 组装订单明细数据, 批量保存订单明细
     *E. 组装订单数据, 批量保存订单数据
     *F. 删除当前用户的购物车列表数据
     */
    public void submit(Orders orders) {
        Long userId = BaseContext.getCurrentID();
        LambdaQueryWrapper<ShoppingCart> shoppingCartLambdaQueryWrapper = new LambdaQueryWrapper<>();
        shoppingCartLambdaQueryWrapper.eq(userId!=null,ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCartList = shoppingCartService.list(shoppingCartLambdaQueryWrapper);
        //判断购物车是否为空
        if (shoppingCartList==null||shoppingCartList.size()==0){
            throw new CustomException("空购物车，无法下单哦");
        }
        User user = userService.getById(userId);
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook==null){
            throw new CustomException("空地址，无法下单");
        }
        long orderId = IdWorker.getId();
        AtomicInteger amount = new AtomicInteger(0);
        //组装订单明细信息
       List<OrderDetail> orderDetails =
               shoppingCartList.stream().map((item)->{
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setImage(item.getImage());
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setAmount(item.getAmount());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());
        //组装订单数据
        orders.setAmount(new BigDecimal(amount.get()));
        orders.setId(orderId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserId(userId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setConsignee(addressBook.getConsignee());
        orders.setAddressBookId(addressBookId);
        orders.setPhone(addressBook.getPhone());
        orders.setUserName(user.getName());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        this.save(orders);
        orderDetailService.saveBatch(orderDetails);
        shoppingCartService.remove(shoppingCartLambdaQueryWrapper);
    }
}
